Revised autoreload interface
Make the header only contain the public interface and nothing from the implementation. All functions get a handle to their self object, like the img_ and tns_ and win_ functions. All necessary data (file path) is also passed as an argument, so that no extern redeclarations are needed. Make arl_setup_dir() private, it's not called outside the module. Make arl_handle() return true if the file has changed, so that the reloading of the file can be done by the caller.
This commit is contained in:
Bert Münnich
parent
edb117e3bd
commit
3724d3fc17
18
autoreload.h
18
autoreload.h
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@ -21,23 +21,15 @@
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#include "types.h"
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void arl_cleanup(void);
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void arl_handle(void);
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void arl_init(void);
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void arl_setup(void);
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void arl_setup_dir(void);
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typedef struct {
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int fd;
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int wd;
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bool watching_dir;
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} autoreload_t;
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} arl_t;
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extern autoreload_t autoreload;
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extern int fileidx;
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extern fileinfo_t *files;
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void load_image(int);
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void redraw(void);
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void arl_cleanup(arl_t*);
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bool arl_handle(arl_t*, const char*);
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void arl_init(arl_t*);
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void arl_setup(arl_t*, const char*);
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#endif /* AUTORELOAD_H */
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@ -21,35 +21,59 @@
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#include <unistd.h>
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#include <sys/inotify.h>
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#include <libgen.h>
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#include <time.h>
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#include "util.h"
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#include "autoreload.h"
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const struct timespec ten_ms = {0, 10000000};
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void arl_cleanup(void)
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CLEANUP void arl_cleanup(arl_t *arl)
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{
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if (autoreload.fd != -1 && autoreload.wd != -1)
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if (arl->fd != -1 && arl->wd != -1)
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{
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if(inotify_rm_watch(autoreload.fd, autoreload.wd))
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if(inotify_rm_watch(arl->fd, arl->wd))
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error(0, 0, "Failed to remove inotify watch.");
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}
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}
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void arl_handle(void)
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static void arl_setup_dir(arl_t *arl, const char *filepath)
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{
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char *dntmp, *dn;
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if (arl->fd == -1)
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{
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error(0, 0, "Uninitialized, could not add inotify watch on directory.");
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return;
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}
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/* get dirname */
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dntmp = (char*) strdup(filepath);
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dn = (char*) dirname(dntmp);
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/* this is not one-shot as other stuff may be created too
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note: we won't handle deletion of the directory itself,
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this is a design decision */
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arl->wd = inotify_add_watch(arl->fd, dn,IN_CREATE);
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if (arl->wd == -1)
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error(0, 0, "Failed to add inotify watch on directory '%s'.", dn);
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else
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arl->watching_dir = true;
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free(dntmp);
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}
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bool arl_handle(arl_t *arl, const char *filepath)
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{
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bool reload = false;
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ssize_t len;
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char buf[4096] __attribute__ ((aligned(__alignof__(struct inotify_event))));
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const struct inotify_event *event;
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char *ptr;
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char *fntmp, *fn;
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len = read(autoreload.fd, buf, sizeof buf);
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len = read(arl->fd, buf, sizeof buf);
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if (len == -1)
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{
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error(0, 0, "Failed to read inotify events.");
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return;
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return false;
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}
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for (ptr = buf; ptr < buf + len;
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@ -61,17 +85,16 @@ void arl_handle(void)
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/* events from watching the file itself */
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if (event->mask & IN_CLOSE_WRITE)
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{
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load_image(fileidx);
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redraw();
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reload = true;
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}
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if (event->mask & IN_DELETE_SELF)
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arl_setup_dir();
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arl_setup_dir(arl, filepath);
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/* events from watching the file's directory */
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if (event->mask & IN_CREATE)
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{
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fntmp = strdup(files[fileidx].path);
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fntmp = strdup(filepath);
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fn = basename(fntmp);
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if (0 == strcmp(event->name, fn))
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@ -79,76 +102,49 @@ void arl_handle(void)
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/* this is the file we're looking for */
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/* cleanup, this has not been one-shot */
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if (autoreload.watching_dir)
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if (arl->watching_dir)
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{
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if(inotify_rm_watch(autoreload.fd, autoreload.wd))
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if(inotify_rm_watch(arl->fd, arl->wd))
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error(0, 0, "Failed to remove inotify watch.");
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autoreload.watching_dir = false;
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arl->watching_dir = false;
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}
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/* when too fast, imlib2 can't load the image */
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nanosleep(&ten_ms, NULL);
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load_image(fileidx);
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redraw();
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reload = true;
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}
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free(fntmp);
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}
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}
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return reload;
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}
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void arl_init(void)
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void arl_init(arl_t *arl)
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{
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/* this needs to be done only once */
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autoreload.fd = inotify_init();
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autoreload.watching_dir = false;
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if (autoreload.fd == -1)
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arl->fd = inotify_init();
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arl->watching_dir = false;
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if (arl->fd == -1)
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error(0, 0, "Could not initialize inotify.");
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}
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void arl_setup(void)
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void arl_setup(arl_t *arl, const char *filepath)
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{
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if (autoreload.fd == -1)
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if (arl->fd == -1)
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{
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error(0, 0, "Uninitialized, could not add inotify watch.");
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return;
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}
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/* may have switched from a deleted to another image */
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if (autoreload.watching_dir)
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if (arl->watching_dir)
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{
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if (inotify_rm_watch(autoreload.fd, autoreload.wd))
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if (inotify_rm_watch(arl->fd, arl->wd))
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error(0, 0, "Failed to remove inotify watch.");
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autoreload.watching_dir = false;
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arl->watching_dir = false;
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}
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autoreload.wd = inotify_add_watch(autoreload.fd, files[fileidx].path,
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arl->wd = inotify_add_watch(arl->fd, filepath,
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IN_ONESHOT | IN_CLOSE_WRITE | IN_DELETE_SELF);
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if (autoreload.wd == -1)
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error(0, 0, "Failed to add inotify watch on file '%s'.", files[fileidx].path);
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if (arl->wd == -1)
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error(0, 0, "Failed to add inotify watch on file '%s'.", filepath);
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}
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void arl_setup_dir(void)
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{
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char *dntmp, *dn;
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if (autoreload.fd == -1)
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{
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error(0, 0, "Uninitialized, could not add inotify watch on directory.");
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return;
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}
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/* get dirname */
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dntmp = (char*) strdup(files[fileidx].path);
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dn = (char*) dirname(dntmp);
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/* this is not one-shot as other stuff may be created too
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note: we won't handle deletion of the directory itself,
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this is a design decision */
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autoreload.wd = inotify_add_watch(autoreload.fd, dn,IN_CREATE);
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if (autoreload.wd == -1)
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error(0, 0, "Failed to add inotify watch on directory '%s'.", dn);
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else
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autoreload.watching_dir = true;
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free(dntmp);
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}
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@ -18,14 +18,26 @@
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#include "autoreload.h"
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void arl_cleanup(void) { }
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void arl_cleanup(arl_t *arl)
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{
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(void) arl;
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}
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void arl_handle(void) { }
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bool arl_handle(arl_t *arl, const char *filepath)
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{
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(void) arl;
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(void) filepath;
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return false;
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}
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void arl_init(void) { }
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void arl_setup(void) { }
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void arl_setup_dir(void) { }
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void arl_init(arl_t *arl)
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{
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(void) arl;
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}
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void arl_setup(arl_t *arl, const char *filepath)
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{
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(void) arl;
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(void) filepath;
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}
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31
main.c
31
main.c
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@ -28,6 +28,7 @@
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <time.h>
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#include <X11/keysym.h>
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#include <X11/XF86keysym.h>
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@ -57,6 +58,7 @@ void slideshow(void);
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void clear_resize(void);
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appmode_t mode;
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arl_t arl;
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img_t img;
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tns_t tns;
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win_t win;
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@ -65,7 +67,6 @@ fileinfo_t *files;
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int filecnt, fileidx;
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int alternate;
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int markcnt;
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autoreload_t autoreload;
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int prefix;
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bool extprefix;
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@ -100,7 +101,7 @@ timeout_t timeouts[] = {
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void cleanup(void)
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{
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img_close(&img, false);
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arl_cleanup();
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arl_cleanup(&arl);
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tns_free(&tns);
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win_close(&win);
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}
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@ -320,7 +321,7 @@ void load_image(int new)
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info.open = false;
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open_info();
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arl_setup();
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arl_setup(&arl, files[fileidx].path);
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if (img.multi.cnt > 0 && img.multi.animate)
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set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
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@ -676,6 +677,8 @@ void on_buttonpress(XButtonEvent *bev)
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prefix = 0;
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}
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const struct timespec ten_ms = {0, 10000000};
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void run(void)
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{
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int xfd;
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@ -689,8 +692,8 @@ void run(void)
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init_thumb = mode == MODE_THUMB && tns.initnext < filecnt;
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load_thumb = mode == MODE_THUMB && tns.loadnext < tns.end;
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if ((init_thumb || load_thumb || to_set || info.fd != -1 || autoreload.fd != -1) &&
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XPending(win.env.dpy) == 0)
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if ((init_thumb || load_thumb || to_set || info.fd != -1 ||
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arl.fd != -1) && XPending(win.env.dpy) == 0)
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{
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if (load_thumb) {
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set_timeout(redraw, TO_REDRAW_THUMBS, false);
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@ -712,15 +715,21 @@ void run(void)
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FD_SET(info.fd, &fds);
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xfd = MAX(xfd, info.fd);
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}
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if (autoreload.fd != -1) {
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FD_SET(autoreload.fd, &fds);
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xfd = MAX(xfd, autoreload.fd);
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if (arl.fd != -1) {
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FD_SET(arl.fd, &fds);
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xfd = MAX(xfd, arl.fd);
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}
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select(xfd + 1, &fds, 0, 0, to_set ? &timeout : NULL);
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if (info.fd != -1 && FD_ISSET(info.fd, &fds))
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read_info();
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if (autoreload.fd != -1 && FD_ISSET(autoreload.fd, &fds))
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arl_handle();
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if (arl.fd != -1 && FD_ISSET(arl.fd, &fds)) {
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if (arl_handle(&arl, files[fileidx].path)) {
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/* when too fast, imlib2 can't load the image */
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nanosleep(&ten_ms, NULL);
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load_image(fileidx);
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redraw();
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}
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}
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}
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continue;
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}
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@ -864,7 +873,7 @@ int main(int argc, char **argv)
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win_init(&win);
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img_init(&img, &win);
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arl_init();
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arl_init(&arl);
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if ((homedir = getenv("XDG_CONFIG_HOME")) == NULL || homedir[0] == '\0') {
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homedir = getenv("HOME");
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